I would say that you need to be in decent shape to start that routine up. At least an intermediate-level exerciser who can make it through some high-impact moves without absolute discomfort.
I do understand you can modify through it, so I suppose you *could* be a beginner and try it out but I'm not sure if the dread factor of it would scare a person off.
As was mentioned, it's a ton of high-impact moves - lots and lots and lots and lots and lots of jumping, jumping, jumping, jumping... (did I mention jumping?). I'm an advanced exerciser and those workouts scare the bajeezus out of ME.
One thing I would suggest... if you want to save some money and try something that incorporates some of the moves, try out Zuzka's workouts on YouTube. They're nothing to sneeze at, either: www.youtube.com/user/ZuzkaLight